Controlli MVH26 Bedienungsanleitung

ISO 9001

CONTROLLI

16010 SANT’OLCESE Genova - Italy

Tel.: +39 01073061 Fax: +39 0107306870/871

E-mail: [email protected] Web: www.controlli.eu

MOUNTING INSTRUCTIONS

Hot media hazard. Before removing actuator from valve or opening the valve, ensure that the valve control medium is

isolated and remove the pressure. Work must only be carried out by a competent engineer.

Attention: do not use the actuator disassembled from the valve.

MVH26/36/46/56 models

Byrotatingthemanualcontrolknob,

lower the stem extension until it

reaches the valve stem, then rotate

the actuator to screw the stem into

the extension.

Tighten the locknut on the stem and

lock the two nuts on the U-bolt.

Assemble the actuator to the valve by U-bolt and the

two nuts with the washer without locking the nuts.

Lock the stem extension c on the rack placing the

indicator disk a and the jagged washer b.

Valve Actuators MVH

1st Issue rev. e 01/12 1 DIM156e

MVH36A models

Lock the stem extension c on the rack placing the indicator

disk a and the jagged washer b.

Assemble the ac-

tuator to the valve

byU-boltandthetwo

nutswith the washer

without locking the

nuts.

-Lift the valve stem

- Remove the cover and rotate the pivot clockwise so that the rack comes out for

assembling it with the valve stem; the pivot can be locked by a spanner as shown

in the picture

- Rotate the actuator to screw the extension on the valve stem, so lock it tightening

the nut on the stem.

-Tighten the two nuts on the U-bolt to lock the actuator.

-Removethekeyfrom the pivot and mount the small cap.The pivot must be rotated

1/2 turn to assemble 45 mm stroke valves. It is necessary to rotate it with several

turns for valves having lower strokes; as an alternative, it is possible to insert the

nut in place of the jagged washer to lock the stem extension in a lower position.

Thus for assembling the valve rotating the pivot 1/2 turn.

1st Issue rev. e 01/12 2 DIM156e

MVH36C models

-Remove the cover

- Rotate the pivot 1/2 turn counter-clockwise and lock it

by a spanner as shown in the picture.

Lock the stem extension c on the rack placing the indicator

disk a and the jagged washer b.

-Lower the valve stem

-Screw the extension on

the valve stem until the

groove on the actuator base

matches with the one on the

valve, so lock the extension

tightening the nut on the

stem. Assemble the actuator to the valve by U-bolt and

the two nuts with the built-in washer.

1st Issue rev. e 01/12 3 DIM156e

Automatic control systems for:

air conditioning/heating/industrial thermal process.

ISO 9001

The performances stated in this sheet can be modiﬁed without any prior notice due to design improvements

ACTUATOR STROKE CALIBRATION (only for MVH36/56)

- Loosen the locking screws located on the cover and put it off.

- Using a screwdriver, turn counter-clockwise the right potentiometer and clockwise the left one up to their mechanical stop.

- Acting on the manual knob, as shown in ﬁg. 5, bring the indicator disk to both stroke ends and position the related adjustable

indicators.

ELECTRICAL CONNECTIONS

Perform the connections in compliance with existing rules and using max 2,5 mm2cross section wires.

Follow the instructions by using wire terminals on power supply wires in order to prevent accidental contacts between cables at

different voltages in case of wrong installation. On the power supply line install a protection device compliant to existing rules with

a 125 mA intervention threshold and a minimum 3 mm contact opening. The device is not supplied with the product.

MVH26/46 MVH36/36A/36C/56

N3009

Neutral- Supply in N

Supply phase in Y1 (joint up)

Supply phase in Y2 (joint down)

Supply 24 V ~ + 10%

(1) For MVH36 model, connect the potentiometer central of the controller (165 Ohm) to Y terminal, the extremities to M and V+

terminals.

(2) The joint moves downwards when the jumper on SW3 is inA position and the control signal increases.

(3)Connect the position indicator with input current to S3 (or S2) and S1 terminals. Connect the position indicator with input voltage

to S3 (or S2) and M (max 2 mA) terminals. With joint up between M (S1) and S2 minimum voltage value; between M (S1) and

S3 maximum current (voltage) value.

(4) When the actuator is in upper position, the potentiometer has 0 Ohm between W3 and W2 and 1000 Ohm between W2 and

W1 and a variation of 22.2 Ohm for each mm. of stroke.

Supply

control

W1 Auxiliary

W2 Central potentiometer MVH

W3 26/46 (4)

L1 Phase

L2 Neutral

M Common

V+ +15V output (1)

Y Control signal (2)

S3 0...10V or 0..200uA

S2 10...0V or 200...0uA (3)

S1 Analogue common

1st Issue rev. e 01/12 4 DIM156e

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